There are concepts such as "authentication", "user rights", "data
integrity", "key management" that need to be addressed as well as
interoperability with vendors offerings.

I'm sure that an auditor would have a field day with a roll-your-own
solution if the security of the data was truly important. I've
worked around this in the past with a cross-over cable between app
server and database server (network not reachable except via either
host) and by putting the web/app/database server software on the
same host and running everything on lo - neither of which scale
particularly well.

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Nearly all men can stand adversity, but if you want to test a man's
character, give him power.
-Abraham Lincoln, U.S. president (1809-1865) Support free speech; visit
<http://www.efa.org.au/>http://www.efa.org.au/

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Nearly all men can stand adversity, but if you want to test a man's
character, give him power.
-Abraham Lincoln, U.S. president (1809-1865)
Support free speech; visit http://www.efa.org.au/